String class e char in C++ -

String class e char in C++ -

when have

char anything[20]; cout << sizeof anything;

it prints 20.

however

string anymore; cout << sizeof anymore; // prints 4 getline(cin, anymore); // let's suppose type more 1 hundred characters cout << sizeof anymore; // still prints 4 !

i understand how c++ manages this. thanks

sizeof compile-time construct. has nil runtime, rather gives fixed result based on type passed (or type of value passed it). char[20] 20 bytes, string might 4 or 8 bytes or whatever depending on implementation. sizeof isn't telling how much storage string allocated dynamically hold contents.

c++